Boat-propelling means



Feb. 5, 1929.

\ IIIIIIIIIIIIIIIIIIJIIIII WITNESSES M. MARANGQNI BOAT PROPELLING MEANS Filed April 6, 19 28 2 Sheets-Sheet 2 INVENTOR MTIIA BZQRANGONI ATTORNEY Patented Feb. 19 29 UNITED STATE ma'r'rm mmaneom, or NEW YORK, N. Y.

I BoAr-rnornLLrn-e MEANS.

Application filed April 6,

I This invention relates 'to-a boat propelling means, and comprehends a manually operable propelling means for watercraft.

One of the principal objects of the present- 5 invention is to provide a manually operable means for driving the propeller shaft of a screw propeller to'rotate the same at a materially greater rate of speed'than the speed at which themanipulating element'is turned.

The invention further comprehends in a boat propelling apparatus an upstanding supporting frame secured at its lower end within the hull and which frame includes a stationary base section and a movable upper section normally projecting above the gunwales or confines of the boat and movable to a position within the confines thereof so as not to interfere with the stretching of a covering over the boat when the'sameis not in use.

Other objects of the invention reside in; the, simplicity of construction of theapparatus,

the economy with which it may be produced and installed and the general e'fliciency ,de-

rived therefrom. v v

With the above recited and other objects in View, reference is had to the following description and accompanying drawings, in 1 which there is exhibited one'example or embodiment offlthe invent-ion, while the claims define the actual scope of'the same. i

In the drawings: j

Figure 1 is a fragmentary side view of the boat, parts being broken away to illustrate the propelling apparatus installed therein.

p Figure 2 is an enlarged'side view of the propelling apparatus illustrating in. full' and broken lines the active and inactive positions of the movable frame section. v e v v Figure 3 is a sectional planview taken ap}- proximately 'on the line 33 of Figure 2;

"Figured is affront face view of-the appa ratus.,

' Figure 5 is a fragmentary plan view of a modified form ofthe'invention;

' Figure 6 is a sideview thereof.

Referring to the drawings by characters of.

reference, 10' designates a screw propeller, 11

a propeller shaft which extends through the hull of a boatand which isprovided at its 9 forward end with a beveled pinion :12. A

' transverse driven counter shaft 13 is suitably supported in bearings 14 and has, secured thereto a beveled gear 15 which meshes with thepini'on 12. Preferaibl'yy-the ratio betweenv i 5 the gear and pinionis such that the propeller shaft 11 is driven ata' higher. rate'of speed" 1928. Serial No. 267,933.

than the counter shaft 13. The driven counter shaft 13 has also secured thereto a, sprocket 16'and a flywheel 17. Spaced from the counter shaft is a supporting frame includinga stationary base section 18 and an upper movable section 19 which is preferably connected to the base section by hinges 20. The base section 18 has mounted therein in suitablebearings 21 a drive counter shaft 22 which has secured thereto a drive sprocket 23 around which and the sprocket 16 a sprocket chain 24 is trained for transmitting motion from the drive shaft 22 to the driven shaft 13. Pref erably, the gear ratio between the sprockets 1'6 and 23 is such that the shaft 13 is driven at a .7 higher rate of speed than the shaft 22. The drive shaft 22 has also secured thereto a driven sprocket 25 which is connected by'a sprocket chain 26 to a driving sprocket 2'1 se-' cured to-a crank shaft 28 j ournaled in bearings 29in the upper movable frame section 19. A. crank shaft 28 is provided with an op-' erating crank handle 30 adapted to be nanually turned. I Preferablyythe gear" ratio between the sprockets 27 and 25 is such that the latter is driven at'a greater rate of speed than the'former. The frame section 19 is held in a vertical active position by means of bolts 31' which pass respectively through the over- 1 lapped portions 32 and 33 of the upperjand base sections and which engage in'notches 34 and 35 of said overlapped portions. The

frame is ofsuch a length that it projectswhe'nf in its active position above the confines of the.

hullbut is adapted to be swungto an inactive posit-ion within the confines as illustrated in the brokenlines in Figuresll and, When swung'to the inactiveposition itis rested on a. supporting element'36 which is 'attached to the hulljand projects upwardly therefromw paulin or other covering may stretch over the boat. J In the modified adaptation of the invention This permits of the disposition of the fram section 19 below the gunwales sothat a tarillustrated in Figures 5 andfi, the means for transmitting driving power from the driven counter shaft 13 to the propeller shaft- 11 has been'varied bythe elimination of the beveled.

gear and pinion 15' and 12. V In lieu thereof], the counter shaft 13 has/secured thereto a pulley sheave 37 while a stub shaft 38 is provided with a pulley sheave 39. A drivingbelt or cable ,40 is trained around the pulley sheaves 37 and 39 and is also trained aro'undiguidef sheaves .41. The stub shaft has secured-there z to a sprocket 42 while the propeller shaft 11 has secured thereto a sprocket 43 around which are trained a sprocket chain it. In other respects, the propelling apparatus is identical with the preferredform of the invention.

In use and operation, the operator turns the crank handle 30 which rotates the crank shaft 28 and through the sprocket and chain connection 25, 26 and 27 the drive counter shaft 22 is rotated. at an increased rate of speed. The driven counter shaft 13 through the sprocket and chain connection 16, 23 and 24 is driven from the drive counter shaft 22 also at an increased rate of speed while the propeller shaft and its screw propeller 12 are rotated at a further increased rate of speed due to the beveled pinion and gear connection 12 and 15. It is also obvious that by turning the crank handle in opposite direc tions the propeller may be driven in reversed dlr'ections. In order to prevent the sprocket chain 26 from becoming disengaged from the sprockets 25 and 27 when the upper frame section is moved to its inactive position, retaining elements 25 and 27 are carried by the frame sections 18 and 1.9. The elements 25* and 2'? are provided with notched portions 25 and 27 which portions partially embrace the sprockets Where the chains are trained therearound. What is claimed is: r 1. A boat propelling apparatus comprising a propeller shaft, adriven counter shaft operatively connected therewith, a sprocket on the counter shaft, a drive counter shaft spaced therefrom and parallel thereto, a sprocket on said drive counter shaft, a sprocket chain trained around said sprockets and manually operable means connected with the drive shaft comprising an upstanding supporting framesecured at its lower end to the hull of the boat, said frame including a stationary base section and a movable upper section normally pro ectingabove the confines of the boat when the device is in active use and movable to a position within vthe confines thereof when the boat is in inactive use.

2. A boat propelling apparatusfcomprising a propeller shaft, a driven counter shaft operatively'connected therewith, a sprocket on the counter shaft, a drivecounter shaft spaced therefrom and parallel thereto, a sprocket on said drive counter shaft, a sprocket chain trained around said sprockets, manually operable means connected with the drive shaft comprising an upstanding supporting frame secured at its lower end to the hull of the boat, said frame including a stationary base section and a movable upper sectionnormally projecting above the confines of the boat when the device is in active use and movablefto a position within the'confines thereof when the boat is in inactive use,

a man ally operable crankshaft journaled in the upper section of the framework having a sprocket secured thereto, a driven shaft ournaled 1n the base section of the framework having a sprocket secured thereto and I In a manually operable boat propelling apparatus, an upstanding supporting frame secured at its lower end within the hull, said frame including a stationary base section and a movable upper section normally projecting above the confines of the boat and movable to a position within the confines thereof, a manually operable crank shaft ournaled in the upper section of the frame work having asprocket and a crankhandle secured thereto, a driven shaft journaled in the base section of the framework having a sprocket secured thereto anda sprocket chain trained around said sprockets to permit of movement of the upper frame section to a position within the confines of the boat. 7 i 4. In a manually operable boat propelling apparatus, an upstanding supporting frame secured at its lower end within the hull, said frame including a stationary base section and a movable upper section normally projecting above the confines of the boat and movable to a position within the confines thereof, 1 a manually operable crank shaft journaled in the upper section of the framework having a sprocket and a crank handle secured thereto, a driven shaft journaled in the base section of the framework having a sprocket secured thereto, a sprocket chain trained around said sprocketstopermit of movementof the upper. frame section to a position with in the confines of the boat and means for locking the upper frame section in its operating position.

5. In a; manually operable boat propelling apparatus, an upstanding supporting frame secured at its lower end'within the hull,vsaid frame including a stationarybase section and a movable upper section normally projecting above the confines, of therlooat and movable toa position within the confines thereof, a manually operable flcrank shaft journaled in the upper section of the framework having a sprocket and a crank handle secured thereto, a driven shaft journaled in the base section of the frame workhaving a sprocket secured thereto, asprocket chain trained around said sprockets to permit of movement of the upper frame section to av position within the confines of the boat,- means for locking the upper frame section in its operating positionand means for supporting the upper frame section in its inactive position.

6. In a manually operable boat propelling apparatus, an upstanding supporting frame secured at its lower end withinthe hull, said frame including a stationary base section and a movable upper section normally projecting above the confines of the boat and movable to a position within the confines thereof, a manually operable crank shaft journaled in the upper section of the framework having a.

frame including a stationary base section and p a movable upper section normally projecting above the confines of the boat and movable to a position within the confines thereof, a manually operable crank shaft journaled in the upper section of the framework having a sprocket and a crank handle secured thereto, adriven shaft journaled in the base section of the framework having a sprocket secured thereto, a sprocket chain trained around said sprocketsto permit of movement of the upper frame section to a position Within the confines ofthe boat, a propeller shaft having a screw propeller secured thereto and means operatively Connecting said driven shaft and propeller shaft, saidmeans including a coun- 'ter shaft, a sprocket and chain connection between the counter shaft and driven shaft, a'

stub shaft, a sprocket and chain connection a between said stub shaft and the propeller shaft, pulley sheaves secured respectively to the counter shaft and stub shaft, guide sheaves and a flexible driving belt trained.

around said sheaves.

8. In a manually operableiboatpropelling apparatus, an upstanding supportingframe secured at its lower end within the hull, said frame including a stationary base section and a movable upper'section normally projecting above the confines of the boat and movable to a position within the confines thereof, a manually operable crank shaftjournaled in the upper section of the framework. having a sprocket and a crank'handle secured thereto, a vdriven shaft journaled in the base section of the framework having a sprocket secured V thereto, a sprocket chain trained around said sprockets to permitof movement of the upper frame section to a position within the confines of the boat,means forlocking the upper frame section in its operating position,

nieansfor supporting the upper frame section in its inactive position and means carried by the frame sections for preventing the displacement of the sprocket chain from the sprockets. 1

Signed at New York in the county of New York and State of New York this 5th day of April A.D. 192s.

Marita MARANGONI. 

